16              // A. Total number of planes in toroidal direction.
4               // B. Number of CPUs in toroidal direction (B<=A).
560             // C. Number of grids in minor radial direction.
2               // D. Number of CPUs in radial direction.
4               // E. Number of partitions in theta direction (E>=3).
15               // F. Number of CPUs in theta direction
4.712385        // G. dalpha

Note: Total number of CPUs must be equal to B * E * D**2.
420: 38956
4096              // A. Total number of planes in toroidal direction.
1024               // B. Number of CPUs in toroidal direction (B<=A).